Microsoft's AI Bet May Be Priced Too High

Microsoft's (MSFT) premium valuation is causing concern due to its high capital expenditures. The company's costs are higher than its peers, both on earnings and sales multiples. However, Microsoft's ability to convert revenue into cash flow is a significant factor in its premium valuation.

The software giant converts 55.1% of its trailing-twelve-month revenue into operating cash flow, more than twice the market average. This strong conversion rate is one reason why investors are willing to pay a premium for Microsoft shares.

However, not all of this cash flow is free cash flow. In fiscal Q4 2026, Microsoft's operating cash flow was $55.4 billion, but free cash flow came in at just $19.6 billion after capital expenditures of $41 billion. This raises concerns about the sustainability of the company's premium valuation.

The growth in Azure and other cloud services is driving Microsoft's spending on AI infrastructure. While revenue from these services grew 43% year over year, gross margin fell to 67%, partly due to the shift towards Azure and AI-related costs.